Well, there's really no evidence to suggest it's not a Centurion Cinelli, so unless you learn otherwise, I'd call it one. The BB shell is the same as on most Centurion Cinellis I've seen, an SC model with the 'can opener' tangs (top and bottom of chainstays tubes rather than on the sides). I believe the Centution Cinelli Equipes only had a size stamped on the shell, so that jibes, though I think the location of yours is different. I've not seen one in the center of the shell. Also, the shell on the Equipes I've seen has cutouts, like this:



Looks like the bridge between your chainstays (right behind the BB) is different as well.